Low-water acetone rectification device

Abstract

The utility model relates to the technical field of acetone, and discloses a low-water acetone rectification device which comprises a rectification tower when used, the outer wall of one side of the rectification tower is connected with a discharging pipe, the outer wall of the other side of the rectification tower is fixedly connected with a first connecting pipe, the outer surface of one end of the first connecting pipe is fixedly connected with a reboiler, and the outer surface of the other end of the first connecting pipe is fixedly connected with a second connecting pipe. A water inlet pipe is fixedly connected to the outer surface of one side of the reboiler, a first backflow pipe is fixedly connected to the outer surface of the lower end of the rectifying tower, and the other end of the first backflow pipe is fixedly connected to the outer wall of the lower end of the reboiler. According to the acetone rectifying tower, water and acetone are separated, the separation efficiency of the rectifying tower is improved, the refined purity of the volatilized acetone is higher, the flow speed of gas flowing in the pipeline can be controlled through the arranged control valve, the working efficiency when acetone and water are separated is improved, and a better use prospect can be brought.

Description

Technical Field

[0001] The utility model relates to the technical field of acetone, in particular to a low-water acetone distillation device. Background Art

[0002] The water content of industrial acetone is usually 0.5%, which makes it unsuitable for use in special industries. The water content needs to be further reduced. It is difficult to reduce the water content in acetone by atmospheric distillation. The dehydration method using a dehydrating agent is not suitable for industrial production because it is easily saturated. Modern membrane technology is ineffective due to the low water content of industrial acetone. Therefore, a vacuum distillation process has been developed to reduce the water content of acetone.

[0003] However, it still has some disadvantages. For example, the volatilization rate of acetone increases significantly after decompression, and circulating water condensation can no longer meet the requirements. Taking circulating water cooling alone cannot achieve a good condensation effect, which will greatly reduce the purity of acetone after volatilization.

[0004] In order to solve the above problems, this application proposes a low-water acetone distillation device. Utility Model Content

[0005] The purpose of the utility model is to provide a low-water acetone distillation device to solve the problems in the prior art mentioned in the above background art, such as the significant increase in the volatilization rate of acetone after decompression, the inability of circulating water condensation to meet the requirements and the inability to achieve a good condensation effect, which greatly reduces the purity of the acetone after volatilization.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a low-water acetone distillation device, comprising a distillation tower, wherein one side outer wall of the distillation tower is connected to a feed pipe, the other side outer wall of the distillation tower is fixedly connected to a connecting pipe 1, the outer surface of one end of the connecting pipe 1 is fixedly connected to a reboiler, the outer surface of one side of the reboiler is fixedly connected to a water inlet pipe, the lower end outer surface of the distillation tower is fixedly connected to a reflux pipe 1, and the other end of the reflux pipe 1 is fixedly connected to the lower end outer wall of the reboiler, and the outer wall of one side of the reboiler is fixedly connected to a connecting pipe 2.

[0007] Preferably, the outer surface of the upper end of the distillation tower is detachably connected to a connecting pipe three, the outer surface of one end of the connecting pipe three is detachably connected to a condenser one, the outer surface of the lower end of the condenser one is detachably connected to a connecting pipe four, the outer surface of one end of the lower end of the connecting pipe four is detachably connected to a condenser two, the outer surface of the lower end of the condenser two is fixedly connected to a connecting pipe five, one side outer wall of the connecting pipe five is fixedly connected to a connecting pipe six, one side outer wall of the connecting pipe four is fixedly connected to a reflux pipe two, and the other end of the reflux pipe two is connected to the outer wall of one side of the distillation tower.

[0008] Preferably, a control valve is fixedly connected to the outer wall of the connecting pipe six, a vacuum pump is detachably connected to the outer surface of one end of the lower end of the connecting pipe six, and a connecting pipe seven is detachably connected to the outer surface of one side of the vacuum pump.

[0009] Preferably, a cooling water inlet pipe is fixedly connected to the outer wall of one side of the condenser one, and the outer surface of the other side of the cooling water inlet pipe is communicated with a condenser, and the condenser is located in the inner cavity of the condenser one and the connecting pipe four, and the outer surface of one lower end of the connecting pipe three is communicated with cooling pipe one and cooling pipe two, and the cooling pipe one is located on one side of the cooling pipe two, and the cooling pipe one and the cooling water connecting pipe are both located in the inner cavity of the condenser one and the connecting pipe four, and the condenser is sleeved on the outer walls of the cooling pipe one and the cooling pipe two, and the number of the condenser, cooling pipe one and cooling pipe two are all two groups.

[0010] Preferably, the outer surface of the other end of the condenser tube is connected to a cooling water connecting tube, and the outer surface of the other end of the cooling water connecting tube is connected to the outer wall of one side of connecting tube four, and cooling tube one and cooling tube two are connected to the upper end outer surface of connecting tube four.

[0011] Preferably, a cooling water outlet pipe is fixedly connected to the outer surface of one side of the second condenser.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model inputs cooling water into the condenser through the cooling pipe 1 and the cooling pipe 2. Under the circulation of the cooling water, the flowing gas in the cooling pipe 1 and the cooling pipe 2 is quickly cooled and adsorbed in the cooling pipe 1 and the cooling pipe 2. Therefore, it is convenient for us to quickly perform circulating water cooling on the acetone after decompression, separate the water and the acetone, and improve the purity of the acetone after volatilization.

[0014] The utility model can improve the working efficiency when separating acetone and water by controlling the flow rate of the gas flowing in the pipeline through the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a low-water acetone distillation device of the utility model;

[0016] Figure 2 This is a schematic structural diagram of condenser 1 and condenser 2 in a low-water acetone distillation device of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of condenser 1 and condenser 2 in a low-water acetone distillation device of the utility model;

[0018] Figure 4The utility model is a schematic diagram of the structure of a control valve and a vacuum pump in a low-water acetone distillation device.

[0019] In the figure: 1. Distillation tower; 2. Feeding pipe; 3. Connecting pipe 1; 4. Reboiler; 5. Water inlet pipe; 6. Reflux pipe 1; 7. Connecting pipe 2; 8. Connecting pipe 3; 9. Condenser 1; 10. Connecting pipe 4; 11. Condenser 2; 12. Connecting pipe 5; 13. Connecting pipe 6; 14. Control valve; 15. Vacuum pump; 16. Connecting pipe 7; 17. Reflux pipe 2; 18. Cooling water inlet pipe; 19. Condenser; 20. Cooling pipe 1; 21. Cooling pipe 2; 22. Cooling water connecting pipe; 23. Cooling water outlet pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figures 1-4 The utility model provides a technical solution: a low-water acetone distillation device, comprising a distillation tower 1, a feed pipe 2 is connected to the outer wall of one side of the distillation tower 1, a connecting pipe 3 is fixedly connected to the outer wall of the other side of the distillation tower 1, an outer surface of one end of the connecting pipe 3 is fixedly connected to a reboiler 4, an outer surface of one side of the reboiler 4 is fixedly connected to a water inlet pipe 5, a reflux pipe 6 is fixedly connected to the outer surface of the lower end of the distillation tower 1, and the other end of the reflux pipe 6 is fixedly connected to the outer wall of the lower end of the reboiler 4, and a connecting pipe 2 7 is fixedly connected to the outer wall of one side of the reboiler 4. The overall structure is simple and easy to install and operate.

[0022] In this embodiment, Figure 2-Figure 3As shown, the outer surface of the upper end of the distillation tower 1 is detachably connected to a connecting pipe 3 8, the outer surface of one end of the connecting pipe 3 8 is detachably connected to a condenser 1 9, the outer surface of the lower end of the condenser 1 9 is detachably connected to a connecting pipe 4 10, the outer surface of one end of the lower end of the connecting pipe 4 10 is detachably connected to a condenser 2 11, the outer surface of the lower end of the condenser 2 11 is fixedly connected to a connecting pipe 5 12, the outer wall of one side of the connecting pipe 5 12 is fixedly connected to a connecting pipe 6 13, the outer wall of one side of the connecting pipe 4 10 is fixedly connected to a reflux pipe 2 17, and the other end of the reflux pipe 2 17 is connected to the outer wall of one side of the distillation tower 1, by setting The reflux pipe 2 17 can improve the separation efficiency of the distillation tower 1, control the temperature distribution in the tower, reduce energy consumption, avoid tower blockage and adjust the production volume. The outer wall of the connecting pipe 6 13 is fixedly connected to the control valve 14, and the outer surface of one end of the lower end of the connecting pipe 6 13 is detachably connected to the vacuum pump 15, and the outer surface of one side of the vacuum pump 15 is detachably connected to the connecting pipe 7 16. The vacuum pump 15 is provided to remove gas molecules in the container and reduce the pressure in the container, thereby achieving the required vacuum degree, so that the distillation process can be carried out at a lower temperature, avoiding coking and decomposition phenomena that may occur in high-temperature distillation.

[0023] In this embodiment, Figure 3-Figure 4 As shown, the outer wall of one side of the condenser 9 is fixedly connected to the cooling water inlet pipe 18, and the outer surface of the other side of the cooling water inlet pipe 18 is connected to the condenser 19, and the condenser 19 is located in the inner cavity of the condenser 9 and the connecting pipe 4 10, and the outer surface of the lower end of the connecting pipe 3 8 is connected to the cooling pipe 1 20 and the cooling pipe 2 21, and the cooling pipe 1 20 is located on one side of the cooling pipe 21, and the cooling pipe 1 20 and the cooling water connecting pipe 22 are both located in the inner cavity of the condenser 9 and the connecting pipe 4 10, and the condenser 19 is sleeved on the outer wall of the cooling pipe 1 20 and the cooling pipe 2 21, and the condenser 19 and the cooling pipe 20 are connected to the outer wall of the cooling pipe 21 and the cooling pipe 21. There are two groups of tube one 20 and cooling tube two 21. The outer surface of the other end of the condenser tube 19 is connected to the cooling water connecting tube 22, and the outer surface of the other end of the cooling water connecting tube 22 is connected to the outer wall of one side of the connecting tube four 10. The cooling tube one 20 and the cooling tube two 21 are connected to the upper end outer surface of the connecting tube four 10. The outer surface of one side of the condenser two 11 is fixedly connected to the cooling water outlet pipe 23. Through the arrangement of the condenser tube 19, cooling tube one 20, and cooling tube two 21, the acetone after decompression can be cooled by circulating water, the water and acetone can be separated, and the purity of the acetone after volatilization can be improved.

[0024] A low-water acetone distillation device, when in use, first places raw materials in a distillation tower 1, heats them through a reboiler 4, heats the liquid to form gas, then starts a vacuum pump 15. Under the action of the vacuum pump 15, the formed gas flows into a cooling pipe 1 20 and a cooling pipe 2 21 in the condensed gas. The decompressed acetone is quickly cooled by circulating water through a condenser pipe 19 provided in the condenser. After two cycles of circulating water cooling, the acetone flows out through a connecting pipe 5 12 to separate water and improve the purity of the acetone after volatilization. In addition, a control valve 14 is provided to control the flow rate of the gas flowing in the pipeline, thereby improving the working efficiency when separating acetone and water.

[0025] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A low-water acetone distillation device, comprising a distillation tower (1), characterized in that: The outer wall of one side of the distillation tower (1) is connected to a feed pipe (2), the outer wall of the other side of the distillation tower (1) is fixedly connected to a connecting pipe 1 (3), the outer surface of one end of the connecting pipe 1 (3) is fixedly connected to a reboiler (4), the outer surface of one side of the reboiler (4) is fixedly connected to a water inlet pipe (5), the outer surface of the lower end of the distillation tower (1) is fixedly connected to a reflux pipe 1 (6), and the other end of the reflux pipe 1 (6) is fixedly connected to the outer wall of the lower end of the reboiler (4), and the outer wall of one side of the reboiler (4) is fixedly connected to a connecting pipe 2 (7).

2. A low-water acetone distillation device according to claim 1, characterized in that: The outer surface of the upper end of the distillation tower (1) is detachably connected to a connecting pipe three (8), the outer surface of one end of the connecting pipe three (8) is detachably connected to a condenser one (9), the outer surface of the lower end of the condenser one (9) is detachably connected to a connecting pipe four (10), the outer surface of one end of the lower end of the connecting pipe four (10) is detachably connected to a condenser two (11), the outer surface of the lower end of the condenser two (11) is fixedly connected to a connecting pipe five (12), the outer wall of one side of the connecting pipe five (12) is fixedly connected to a connecting pipe six (13), the outer wall of one side of the connecting pipe four (10) is fixedly connected to a reflux pipe two (17), and the other end of the reflux pipe two (17) is connected to the outer wall of one side of the distillation tower (1).

3. A low-water acetone distillation device according to claim 2, characterized in that: The outer wall of the connecting pipe six (13) is fixedly connected to a control valve (14), the outer surface of one end of the lower end of the connecting pipe six (13) is detachably connected to a vacuum pump (15), and the outer surface of one side of the vacuum pump (15) is detachably connected to a connecting pipe seven (16).

4. A low-water acetone distillation device according to claim 1, characterized in that: The outer wall of one side of the condenser one (9) is fixedly connected to a cooling water inlet pipe (18), and the outer surface of the other side of the cooling water inlet pipe (18) is connected to a condenser pipe (19), and the condenser pipe (19) is located in the inner cavity of the condenser one (9) and the connecting pipe four (10). The outer surface of one end of the lower end of the connecting pipe three (8) is connected to the cooling pipe one (20) and the cooling pipe two (21), and the cooling pipe one (20) is located on one side of the cooling pipe two (21), and the cooling pipe one (20) and the cooling water connecting pipe (22) are both located in the inner cavity of the condenser one (9) and the connecting pipe four (10), and the condenser pipe (19) is sleeved on the outer wall of the cooling pipe one (20) and the cooling pipe two (21), and the number of the condenser pipe (19), cooling pipe one (20), and cooling pipe two (21) is two groups.

5. A low-water acetone distillation device according to claim 4, characterized in that: The outer surface of the other end of the condenser tube (19) is connected to the cooling water connecting tube (22), and the outer surface of the other end of the cooling water connecting tube (22) is connected to the outer wall of one side of the connecting tube four (10), and the cooling tube one (20) and the cooling tube two (21) are connected to the outer surface of the upper end of the connecting tube four (10).

6. A low-water acetone distillation device according to claim 2, characterized in that: A cooling water outlet pipe (23) is fixedly connected to the outer surface of one side of the condenser 2 (11).

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